Hydraulic water pump



Jan. 25, 1944. w GUTSCH 2,339,990

HYDRAULIC WATER PUMP Filed July 21, 1941 57 i p 52 57 EML, 52 55 5| 3 35| 0 g 5 59 g 50 K 56 52 :j I 5| 6O J A 6T6 E. J

I 4 P F r 4 if 40 I FIG. I.

Patented Jan. 25, 1944 UNITED STATES PATENT OFFICE HYDRAULIC WATER. PUMPErnest W. Gutsch, Viroqua, Wis. Application July 2 1, 1941, Serial No.403,287

2 Claims.

My invention relates to an improvement in an hydraulically operated deepwell pump wherein it is desired to use liquid under pressure in theoperation of the pump.

It is an object of the present invention to provide a double acting deepwell pump which is hydraulically operated. The principle of transmittingpressure and the multiplication of force through liquid is the principalbasic function of the present invention. The transmission of vpressurethrough a liquid is very clearly given in the Blaise Pascal principlewhich states as follows: An increase of pressure on any part of aconfined liquid causes an equal increase tln'oughout the liquid." Byemploying the Pascal principle, the present invention provides a meansof operating a deep well pump by using liquid under pressure.

It is a purpose of the present invention to provide a double acting deepwell pump having a double acting piston, the double acting piston beingoperated by pressure transmitted through liquid by means of conduitlines from a pressure plunger. The kinetic energy, which is imparted tothe pressure plunger, is changed into potential energy when transmittedto the liquid through conduit lines leading to the double actarea of thedouble acting piston, the pressure is transmitted from the liquid to thehead of the piston as kinetic energy. Through such a construction I haveprovided a means of operating a large piston by pressure applied to asmall piston with the pressure being transmitted through liquid.

It is an object of my invention to provide a double acting deep wellpump which may pump liquid at any desired depth whether it be water,oil, or the like. The pump which I have illustrated is so constructedthat the liquid pumped to and from the pump cylinders will not interferewith the confined liquid used to transmit pressure to the double actingpiston from the small pressure plunger.

It is a further object of my invention to provide a pair of valveslocated within the double acting piston which are in reality the key tothe present invention. Without the valves, the liquid would pass onthrough the double acting piston without performing any work.

With the valves of the double piston in position, two distinct pressureareas are created within the pump cylinder. The area between the headsof the double piston communicates only with the pressure created in thepressure pump. The outside areas of the double piston communicate withthe atmospheric pressure by way of an open discharge valve in thepressure pump or by way of the port below the pump cylinder reachinginto the liquid.

It is a further feature of. my invention to proing piston. When thepressure enters the inner v vide a double acting piston having twoworking surfaces and a clearance space interposed between the twoworking surfaces. Within the clearance space, I provide a pair ofworking valves which are held in place by a spring or some other meansto keep the valves in alignment with respect to one another. With thevalves of the double piston in positio the transmitted pressure in theinner area of the double piston is multiplied .by, the large inner areaof the clearance space of the double piston.

In the drawing forming a part of my specification:

Figure 1 is a cross-sectional view. centrally through my double actingpump.

Figure 2 is a crosssectional view taken on the line 2-2 of Figure 1.

Figure 3 is an enlarged view of the upper portion of my double actingpump.

Figure 4 is a cross-sectional view on the line 4-4 of Figure 1. 1

In Figure l of the drawing, I disclose a double acting hydraulic deepwell pressure pump having the same operation as the single actinghydraulic pump. In the double acting type there occurs simultaneously asuction and discharge action of liquid with each stroke. In this casethe cylinder has to be completely immersed in a liq: uid. Reference ismade to Figure 4 of the drawing, which best illustrates a double actingpump. The pump D is provided with a pump cylinder E which is enclosed ina casing F. A piston 35 is slidably mounted within the pump chamber Eand the piston is constructed with a top head 36 and a lower head 37.Bolt means 39 secure the heads 36 and 37 in a firm relationship, thusforming a clearance space 40 within the piston 35. A hollow rod 4|extends through the head 36 into the clearance space 40. A second hollowrod 42 extends through the head 31 into the clearance space likewise,thereby providing two ports adjacent the clearance space; A valve 43rides within the hollow rod 4| and a similar valve 44 rides within thehollow tube 42. A spring 45 is interposed between the valves 43 and 44which serves the purpose of keeping the valves in place and inalignment. The hollow rod 4| telescopes in and out of a cylindricalextension which projects a short distance into the passageway 15, andsimilarly, the hollow rod 42 telescopes in and out of a secondcylindrical extension 41. The operation and the action of the rodstelescoping in and out of their respective cylindrical extensions willlater be described.

The uppermost part of the pump unit D is so constructed as to provide apressure chamber 49. A plunger 50 is slidably mounted within thepressure chamber 49 and is operated in an upward and downward movementby means of a plunger rod 5|. The plunger rod 5| is slidably mounted andsurrounded by stufling boxes 52, to'prevent the two valves 55 and 55will later be fully ex-- plained. Connected to the lower part of thepump chamber E, I have provided a pair of check valves and a passing ofliquids to and from the pump chamber E. Leading from the pump chamber Eis a conduit 53 which leads from the pump chamber to the discharge spout64.

As previously explained, the pump chamber E is entirely immersed inliquid, thus enabling liquid to enter either one of two ports in orderthat a double pumping action may take place. The second inlet port 65leads to a chamber 56. A valve 61 controls the passage of liquid fromthe chamber 66 into a second chamber 69. A passageway I is constructedleading from the second chamber 59 into the pump chamber E. Therefore, Iprovide a means of allowing liquid to enter the pump chamber above thepiston 35 as well as below the piston.

In operation, at the beginning of the downstroke of the plunger 50within the pressure chamber 49, valve 56 is pressed against the seat llwhile liquid under pressure enters the channel 54 and forces the plunger59 upward, pushing valve 55 from its seat 12 so that valve 55 is openfor the discharge of liquid from conduit 63. Valve 43 is pushed awayfrom its seat compressing the spring 45 and forcing valve 44 firmlyagainst the hollow rod 42, thus shutting off any chance of liquidescaping from the clearance space 40. Therefore, the liquid underpressure from the pressure chamber 49 is forced through the pascage port62 which controls thethe piston 35 to move upwardly, forcing the liquidabove the piston out through the valve I4 up through a small passageway14' into thepassageway 15. The liquid continues to pass on -up throughthe passageway 15, past the valve 55, and out through the dischargespout 64. At the same time, while liquid is being discharged above thepiston, a sucking action takes place below the piston, causing liquid topassthrough the check valve 62' past the cage port 52,'intothe lowerpart of the pump chamber E. At the end sageway 15 to the cylindricalextension and from there through the hollow rod 4| into the clearancespace 40, forcing the piston 35 to move in a downward direction, causingthe hollow rod 4| to telescope out of the cylindrical extension 45. Uponthe movement of the piston 35 in a downward direction, the hollow rod 42telescopes into the cylindrical extension 41. Simultaneously, piston 35,integral with the hollow rods 4| and 42 in the cylinder, draws liquidinto the chamber 65, through port 61 in the second chamber 59, and onthrough port 10 into the pump chamber E. At the same time, while thepiston 35 is moving downwardly, it discharges liquid from the pumpchamber E through the cage port 52, past the check valve 52" on upthrough the conduit 53, past the valve 55 and on out through thedischarge spout 64. As soon as the pressure is released, valve 55returns to-its seat 12, as does valve 43 in thepiston 35. Both theplunger 59 and the piston 35 are now at their lowermost positions.

At the return stroke, valve 55 is pressed tightly against its seat 12,while valve 55 is forced away from its seat 1| by the pressure passingthrough channel 53 and acting against the plunger 5|, causing the spring59 to compress. Liquid is forced down through extension 41, through thethe valve 44 to open. As the valve 44 is forced open, the spring 45 iscompressed, thus pushing the valve 43 tightly against its seat. Uponsuch an operation, the liquid transmits pressure to the piston 35 fromthe pressure applied to the plunger the conduit 63, into the.

hollow rod 42, causing of the stroke, both valves 55 and 44 return totheir original positions.

It will be noted that the applied pressure, which is transmitted to theclearance space of the pistons, is multiplied by the projected area ofthe clearance space. The applied pressure transmitted and multiplied istransmitted to the head of the pistons to be absorbed by the requiredforce to draw and expel liquid to and from the pump cylinder. By such aconstruction that I have provided, liquid can be pumped from anydesirable depth without any great effort.

In accordance with the patent statutes, I have described the principlesof construction and operation of my pressure pump; and while I haveendeavored to set forth the best embodiments thereof, I desire to haveit understood that this is only illustrative of a means of carrying outmy invention, and that obvious changes may be made within the scope ofthe following claims without departing from the spirit of my invention.

. I claim:

1. A deep well pump comprising a primary pressure pump unit at the topof the well, a water lift unit embedded in the well at the lower endthereof,passageways between said primary pressure pump unit and saidwater lift unit, a volume of water maintained in and filling the area ofthe passageways between said primary pressure pump unit and said waterlift unit, a hollow piston in said water lift unit, means for directingthe liquid pressure from said primary pressure pump unit to thechamber'in said hollow piston to reciprocate said piston in the pumpunit to force water out of the well, a water outlet passageway, and apair of check valves leading to said water outlet passageway adapted toopen and close in accordance with the reciprocation of said piston insaid pump unit, one of said check valves opening when the pressure is inone direction in said piston of said pump unit, while the other checkvalve closes, and vice versa when the pressure is in the other directionagainst the piston of said pump unit.

2. A deep well pump including a primary pressure pump unit, a water liftpiston and cylinder unit embedded in the well, passageways leading fromeither side of the piston in said pressure unit to either side of thepiston in said water lift unit, a water outlet passageway, and a pair ofcheck valves interposed in said water outlet passageway leading fromsaid pressure unit, whereby when said pressure unit piston is operatedin one direction, pressure is directed against one of said check valvesto open the same and pressure is also directed against one side of thepiston in the water lift unit to force water out of the well,

. and when said pressure unit is operated in the other direction theother check valve is opened while the first check-valve is closed, andpressure is directed to the other side of the piston in the water liftunit to raise water out of the well.

ERNEST W. GU'I'SCH.

